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Registration Authority

IEEE offers Registration Authority programs or registries which maintain lists of unique identifiers under standards and issue unique identifiers to those wishing to register them. The IEEE Registration Authority assigns unambiguous names to objects in a way which makes the assignment available to interested parties.

MA-S is a 36-bit identifier that can be used to create various extended identifiers. It is most often used to create IEEE 802-defined MAC addresses (EUI-48 and EUI-64). The MA-S does not include assignment of an OUI.

The MA-S assignment may be appended with 12 organization-supplied bits to form an EUI-48 or 28 organization-supplied bits to form an EUI-64. The MA-S assignment may also be used as an OUI-36 as specified in various standards. The MA-S assignment may also be used to generate EUI-60 (deprecated), TCDI-40, MAC-48 (obsolete term), and create multicast addresses (per IEEE Std 802). The MA-S assignment may be used as an OUI-36 and to create various extended identifiers based on the OUI-36.

Applications making use of an MA-S assignment should make no assumptions about the bit pattern that will be present in the (24-bit most-significant) OUI portion of the assigned MA-S.

For more information, please see the tutorial “Guidelines for Use of Organizationally Unique Identifiers (OUI) and Company ID (CID)”.

Registration Fees

Products

Fees

Total Due

Publicly Registered MA-S
(company name & address on the public listing)

US $645

US $645

Privately Registered MA-S
(company name and address NOT on the public listing)

*Assignees will be required to pay an annual fee to maintain confidentiality. Payment options for the renewal fee are credit card, check or wire transfer. IEEE does not accept requests for applicant-specified identifiers.

Application Information
Please search the public listing to determine whether your Organization has already been issued an MA-S- assignment. If so, you may email us to obtain contact information for the assignment. If a new assignment is required, a Usage Percentage Letter must be submitted.

Complete and electronically submit the MA-S application. Do not submit more than one application unless you are requesting more than one assignment. Applications expire after 30 days.

A tracking number and any questions regarding your application will be sent via email to the REQUESTOR.

Be advised that the credit card will be charged once the application is submitted. Assignment details and a Paid Invoice are sent to the REQUESTOR.

The public MA-S listing is updated as assignments are issued.

Related Standards
The OUI defined in IEEE 802®-2001 can be used to generate 48-bit Universal LAN MAC addresses to uniquely identify Local and Municipal Area Networks stations, and Protocol Identifiers to identify public and private protocols. These are used in LAN and MAN applications. The relevant standards include but not limited to:

The IEEE Registration Authority will assign an additional OUI-36 to any organization requesting one, providing they submit a letter on company letterhead to the IEEE Registration Authority c/o IEEE Standards Department, stating that their company will not "ship" product in the new block assignment until well after they have reached (shipped) at least 95% of the block assignment, in the context of a specified standard. Your company should ensure that large numbers of derived identifiers are not left unused.